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Volume 20 Issue 2

Mar.  2003

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2003 >  20(2): 245-251

Heat and Moisture Budgets during the Period of HUBEX/GAME in the Summer of 1998

  • 1.

    Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029


doi: 10.1007/s00376-003-0010-y

  • By using the high-resolution GAME reanalysis data, the heat and moisture budgets during the period of HUBEX/GAME in the summer of 1998 are calculated for exploring the thermodynamic features of Meiyu over the Changjiang-Huaihe (CH) valley. During the CH Meiyu period, an intensive vertically-integrated heat source and moisture sink are predominant over the heavy rainfall area of the CH valley, accompanied by strong upward motion at 500 hPa. The heat and moisture budgets show that the main diabatic heating component is condensation latent heat released by rainfall. As residual terms, the evaporation and sensible heating are relatively small. Based on the vertical distribution of the heat source and moisture sink, the nature of the rainfall is mixed, in which the convective rainfall is dominant with a considerable percentage of continuous stratiform rainfall. There are similar time evolutions of the main physical parameters(〈Q1〉,〈Q2〉,and vertical motion ω at 500 hPa).The time variations of〈Q1〉and〈Q2〉are in phase with those of -ω500, and have their main peaks within the CH Meiyu period. This shows the influence of the heat source on the dynamic structure of the atmosphere. The wavelet analyses of those time series display similar multiple timescale characteristics. During the CH Meiyu period, both the synoptic scale(～6 days) and mesoscale (～2 days and ～12 hours) increase obviously and cause heavy rainfall as well as the appearances of the maxima of the main physical parameters. Among them, the mesoscale systems are the main factors.
  • [1] Zhao Li, Zhao Sixiong, 1995: Numerical Experiments of Meiyu(Baiu) Rainfall by Quasi-Lagrangian Limited Area Model with Terrain, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 57-66.  doi: 10.1007/BF02661287
    [2] JIN Xin, LI Wanbiao, ZHU Yuanjing, 2003: A Study on the Meiyu Front Using TRMM/PR Data during the 1998 GAME/HUBEX, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 293-298.  doi: 10.1007/s00376-003-0015-6
    [3] Yinshuo Dong, Haishan Chen, Xuan Dong, Wenjian Hua, Wenjun Zhang, 2024: Synergistic Impacts of Indian Ocean SST and Indo-China Peninsula Soil Moisture on the 2020 Record-breaking Meiyu, ADVANCES IN ATMOSPHERIC SCIENCES.  doi: 10.1007/s00376-024-3204-0
    [4] Liu Huaqiang, Qian Yongfu, 1999: Numerical Simulations of Intense Meiyu Rainfall in 1991 over the Changjiang and Huaihe River Valleys by a Regional Climate Model with p-б Incorporated Coordinate System, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 395-404.  doi: 10.1007/s00376-999-0018-z
    [5] Yang Hui, 2001: Anomalous Atmospheric Circulation, Heat Sources and Moisture Sinks in Relation to Great Precipitation Anomalies in the Yangtze River Valley, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 972-983.
    [6] YAO Zhanyu, XU Chenhai, YUAN Jian, LI Wanbiao, ZHU Yuanjing, ZHAO Bolin, 2003: Estimations of Precipitable Water and Its Characteristics during the HUBEX/IOP 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 219-226.  doi: 10.1007/s00376-003-0007-6
    [7] XU Xiangde, MIAO Qiuju, WANG Jizhi, ZHANG Xuejin, 2003: The Water Vapor Transport Model at the Regional Boundary during the Meiyu Period, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 333-342.  doi: 10.1007/BF02690791
    [8] Qian Zhengan, Rod. A. Bromley, Mike. A. Ayles, 1991: Some Analyses and Numerical Simulations of Meiyu in East Asia in 1983, ADVANCES IN ATMOSPHERIC SCIENCES, 8, 67-78.  doi: 10.1007/BF02657365
    [9] REN Liliang, LI Chunhong, WANG Meirong, 2003: Application of Radar-Measured Rain Data in Hydrological Processes Modeling during the Intensified Observation Period of HUBEX, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 205-211.  doi: 10.1007/s00376-003-0005-8
    [10] ZHU Zhilin, SUN Xiaomin, ZHANG Renhua, 2003: Statistical Analysis and Comparative Study of Energy Balance Components Estimated Using Micrometeorological Techniques during HUBEX/IOP 1998/99, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 285-291.  doi: 10.1007/s00376-003-0014-7
    [11] Yang Xiaosong, Lin Zhaohui, Dai Yongjiu, Guo Yufu, 2001: Validation of IAP94 Land Surface Model over the Huaihe River Basin with HUBEX Field Experiment Data, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 139-154.  doi: 10.1007/s00376-001-0009-1
    [12] Li Shuanglin, Ji Liren, Lin Wantao, Ni Yunqi, 2001: The Maintenance of the Blocking over the Ural Mountains during the Second Meiyu Period in the Summer of 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 87-105.  doi: 10.1007/s00376-001-0006-4
    [13] YUE Caijun, SHOU Shaowen, LIN Kaiping, YAO Xiuping, 2003: Diagnosis of the Heavy Rain near a Meiyu Front Using the Wet Q Vector Partitioning Method, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 37-44.  doi: 10.1007/BF03342048
    [14] Xu Hui, Zhang Weiping, Lang Xuxing, Guo Xia, Ge Wenzhong, Dang Renqing, TakaoTakeda, 2000: The Use of Dual-Doppler Radar Data in the Study of 1998 Meiyu Frontal Precipitation in Huaihe River Basin, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 403-412.  doi: 10.1007/s00376-000-0032-7
    [15] WANG Pengyun, YANG Jing, 2003: Observation and Numerical Simulation of Cloud Physical Processes Associated with Torrential Rain of the Meiyu Front, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 77-96.  doi: 10.1007/BF03342052
    [16] Yang Guoxiang, Lu Hancheng, He Qiqiang, 1987: A MESO-α SCALE STUDY OF MEIYU FRONT HEAVY RAIN－PART I: OBSERVATIONAL STUDIES, ADVANCES IN ATMOSPHERIC SCIENCES, 4, 264-277.  doi: 10.1007/BF02915593
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    • Manuscript History

    Manuscript received: 10 March 2003
    Manuscript revised: 10 March 2003
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Heat and Moisture Budgets during the Period of HUBEX/GAME in the Summer of 1998

    • 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029
    • Manuscript received: 2003-03-10
    • Manuscript revised: 2003-03-10

    Abstract: By using the high-resolution GAME reanalysis data, the heat and moisture budgets during the period of HUBEX/GAME in the summer of 1998 are calculated for exploring the thermodynamic features of Meiyu over the Changjiang-Huaihe (CH) valley. During the CH Meiyu period, an intensive vertically-integrated heat source and moisture sink are predominant over the heavy rainfall area of the CH valley, accompanied by strong upward motion at 500 hPa. The heat and moisture budgets show that the main diabatic heating component is condensation latent heat released by rainfall. As residual terms, the evaporation and sensible heating are relatively small. Based on the vertical distribution of the heat source and moisture sink, the nature of the rainfall is mixed, in which the convective rainfall is dominant with a considerable percentage of continuous stratiform rainfall. There are similar time evolutions of the main physical parameters(〈Q1〉,〈Q2〉,and vertical motion ω at 500 hPa).The time variations of〈Q1〉and〈Q2〉are in phase with those of -ω500, and have their main peaks within the CH Meiyu period. This shows the influence of the heat source on the dynamic structure of the atmosphere. The wavelet analyses of those time series display similar multiple timescale characteristics. During the CH Meiyu period, both the synoptic scale(～6 days) and mesoscale (～2 days and ～12 hours) increase obviously and cause heavy rainfall as well as the appearances of the maxima of the main physical parameters. Among them, the mesoscale systems are the main factors.

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